Physics
The sky appears blue because

The atmosphere scatters blue colour more than the others
In white light, the blue component dominates
All colours interfere to produce blue
It is actually blue

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Physics
Air moves from the region where the air ________

Pressure is high to the region where the pressure is low
Humidity is low to the region where the humidity is high
Pressure is low to the region where the pressure is high
Humidity is high to the region where the humidity is low

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Physics
Indicate the false statement about the resistance of a wire

Resistance of metallic wire increases with increase in temperature
It is directly proportional to the area of cross-section of wire
It is directly proportional to the length of wire
It depends on material of wire

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